MCQs R Vectors 4

This quiz contains MCQs R Vectors.

Online MCQs R Language Test

1. How can one define ‘undefined value’ in R Language?

 
 
 
 

2. What is the output of the following R code?

r <- 0:10
r[2]

 
 
 
 

3. Which tidyverse package contains a set of functions, such as select(), that help with data manipulation?

 
 
 
 

4. The following command can be used to print an object “x” in R?

 
 
 
 

5. What is the output of the following R code?
x <- c("a", "b")
as.numeric(x)

 
 
 
 

6. Which of the describe R Language best

 
 
 
 

7. What are ggplot2, tidyr, dplyr, and forcats all a part of?

 
 
 
 

8. If a command is incomplete at the end of a line, R will give a different prompt, by default it is _____

 
 
 
 

9. A data analyst wants to combine values using mathematical operations. What type of operator would they use to do this?

 
 
 
 

10. What is the output of the following R code?
y <- 0:5
vector(y)
y[3]

 
 
 
 

11. ________ operator is used to create integer sequences.

 
 
 
 

12. Which of the following statements about vectors in R is correct?

 
 
 
 

13. A data analyst inputs the following code in RStudio:
sales_1 <- 100 * sales_2
Which of the following types of operators does the analyst use in the code?

 
 
 
 

14. Which function can you use to create a different plot for each type of cut of diamond?

 
 
 
 

15. Which tidyverse package is used for data visualization?

 
 
 
 

16. A data analyst finds the code mdy(10211020) in an R script. What is the year of the date that is created?

 
 
 
 

17. A data analyst wants to store a sequence of data elements that all have the same data type in a single variable. What R concept allows them to do this?

 
 
 
 

18. How one can define ‘infinity’ in R Language?

 
 
 
 

19. An analyst is organizing a dataset in RStudio using the following code:
arrange(filter(Storage_1, inventory >= 40), count)
Which of the following examples is a nested function in the code?

 
 
 
 

20. Identify the wrong statement:

 
 
 
 


MCQs R Vectorr

MCQs R Vectors

  • The following command can be used to print an object “x” in R.
  • What is the output of the following R code? r <- 0:10 r[2] ________ operator is used to create integer sequences. What is the output of the following R code? y <- 0:5 vector(y) y[3] How can one define ‘infinity’ in R Language? How can one define ‘undefined value’ in R Language? What is the output of the following R code? x <- c(“a”, “b”) as.numeric(x) Identify the wrong statement: If a command is incomplete at the end of a line, R will give a different prompt, by default it is _____ Which of the describe R Language best Which function can you use to create a different plot for each type of cut of diamond? A data analyst inputs the following code in RStudio: sales_1 <- 100 * sales_2 Which of the following types of operators does the analyst use in the code? What are ggplot2, tidyr, dplyr, and forcats all a part of? Which tidyverse package is used for data visualization? An analyst is organizing a dataset in RStudio using the following code: arrange(filter(Storage_1, inventory >= 40), count) Which of the following examples is a nested function in the code?
  • Which tidyverse package contains a set of functions, such as select(), that help with data manipulation?
  • Which of the following statements about vectors in R is correct?
  • A data analyst finds the code mdy(10211020) in an R script. What is the year of the date that is created?
  • A data analyst wants to combine values using mathematical operations. What type of operator would they use to do this?
  • A data analyst wants to store a sequence of data elements with the same data type in a single variable. What R concept allows them to do this?

Learn Basic Statistics and Data Analysis

Reading, Creating, Accessing, and Import Data in R Language

MCQs R Vectors 4

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